/Engine/Plugins/Animation/DeformerGraph/Source/OptimusCore/Public/OptimusNodeGraph.h
Returns true if the node in question is a custom kernel node that can be converted to a kernel function with ConvertCustomKernelToFunction.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=OptimusNodeGraph) bool IsCustomKernel ( [UOptimusNode](API\Plugins\OptimusCore\UOptimusNode) * InNode ) const